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Finding the Fourth Proportional to 4,991.98, 6,891.15 and 3,224.45

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Solution

The fourth proportional to 4,991.98, 6,891.15 and 3,224.45 is: 4,451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.98 : 6,891.15 = 3,224.45 : x
  2. Step 2: Convert to fraction form
    4,991.98/6,891.15 = 3,224.45/x
  3. Step 3: Cross multiply
    4,991.98x = 6,891.15 × 3,224.45
  4. Step 4: Simplify right side
    4,991.98x = 22,220,160.56
  5. Step 5: Solve for x
    x = 22,220,160.56/4,991.98
  6. Step 6: Final answer
    x = 4,451.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.